Xto a all whom it mat concern



gnu-3h new issue: @ffirn'.

JULIUS POL LOOK, 0F MORRISANIA, NEW YORK. Letters Patent No. 79,499, dated June 30, 1868.

IMPROVEMENT IN PURIPYING WOOD-SPIRITS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JULIUS POLLOGK, of Morrisania, in the county of Westchester, in the State of New York, have invented spew and useful Improvement in the Manufacture of, Pyroxylic Spirit; end I do hereby declare that the following is a full and exact-description thereof.

The nature of my invention consists in purifying and deodorizing the crude pyroxylic spirit, by separating .from .it the fixed and volatile oils and other impurities.

This separates the fixed oils, which rise to the surface of the mixture after standing, and may be removed by To enable others skilled in the art to use my invention, I will proceed to describe my process. I I first dilute the crude spirit with twice its volume of water, agitating the mixture duringthe operation.

skimming or otherwise. The spirit is then filtered through freshly-burned ehztrconl and concentrated by dis- I tillation. i

What I claim, and desire to secure by Letters Patent, is-- The process of purifying pyroxylic spirit, substantially as herein described.

JULI S POLLOOK. Witnesses: v

ZSILAS D. GIFFORD,

THoMAs Roesns. 

